Glass-blowing machine.



No. 825,423. PATENTED JULY 10, 1906.

G. B. SGHMITT.

GLASS BLOWING MACHINE.

APPLIUATION TILED AUG.12.1905

3 SHEETS-SHEET l No. 825,423. PATENTED JULY 10, 1906. G. E. SGHMITT. GLASS BLOWING MACHINE.

APPLIUATIOI LED AUG. 12. 1906.

3 lHBETl-BHBET 3 III ZlZZmesses; g nfgenZa Hamgs.

.; GEORG EUGENE SCHMITT, OF WELLSBURG, WEST VIRGINIA.

GLASS-BLOWING MACHINE.

To all whumit may concern:-

Be it known that I, GEORG EUGENE 'SCHMITT; a citizen of the United States, re-

oppositely-disposed hol sidin at Wellsbur in the county of Brooke and tate of West irginia, have invented a new. and useful Improvement in Glass-Blowing Machines, of which the following is a specification.

This invention relates to machines for blowing hollow glass articles, and in certain features thereofrelates more particularlyto machines for blowing lass articles having lbw portions connectby a solid portionsuch, for instance, as glass lamp-bodies which have a hollow base and oil-font connected by a solid column or waist.

The rincipal objects of the invention are to pro uce a glass-blowing machine of simple and economical construction whioh' is capable of a rapid, easy, and efficient oper ation; to so construct, arrange, and operate the blow-rod that it will readily enter and withdraw from the neck or collar of the article without breaking or distorting the same; 'to provide the machine with a blast-pipe for directing a cooling-blast against the intermediate connecting portion of the article to prevent the perforation of the same in lowing the article, which blast-pipe is movable away froni the mold to prevent cooling the same when empty; to provide a movable table or support for the blow-mold and connections, whereby the blow-rod and also the ai'r -blast'pipe are operated by the movement of said mold-table, and to improve glassblowing machines in the respects hereinafter specified, and set forth in the claims."

The machine hereinafter described in de- 4o; tail comprisesi briefly stated, a horizontal oscillatory mo the blow-mold is secured, a low-rod movable vertical ly into and out of the bottom of the blow-mold through a holein said moldtable, and connections between said moldtable and blow-rod 'whereby the oscillation of the mold and table to which it is secured raises and lowers said blow-rod into and out of blowing osition. a

The mac 'ne is also provided withan airblast pipe for directing a cooling-blast down ainst the article in theblow-mold, which b ast-pipe is movable toward and from the blow-mold with the blow-rodand isconnected to and operated by the oscillatory moldtable. y

Specification of Letters Patent.

Application filed August 12, 1905- Serial No. 273,972.

' horizontal plane-upon a bearin d'table orsup ort, on which Patented July 10, 1906.

In the accompanying'drawings, consistin of three sheets, igure-l is a side elevation-o a glass-blowing machine embodying the in vention. Fig. 2 is a sectional elevation thereof. Fig. 3 is a lan view, partly in horizontal section, thereo Fig.4'1safra mentar tional plan thereof in line 4 4, l ig. 1. igp5 is a sectional plan of the blow-rod-operatmg mechanismin inc 5 5, Fig. 1.

Like letters of reference refer to like parts in the several figures.

A represents a supporting stand or frame for the several parts of the machine. The frame may be of any suitable construction, that shownin the drawings being of a portable nature and provided with handles a for carrying it from place to place and having a flat or horizontal top B.

C represents a horizontal mold table or support which in the construction shown is rotatably mounted so as to oscillate in a balls 0, confined in circular -ba l-races in the top of the frame and bottom of the moldta la. The 'mold-table is held 111 place by retaining-plates d, Figs. 1 and 3, secured to the 1rame-top and overhangin laterallyprojecting flanges d on theimol -table and its oscillating movement in opposite irections is limited by a lug d, projecting from themold-table and havin a portion depend- -in between and adapte to strike a ainst eit er of'two stop-faces d d on the ame.

The mold-table could be rotatably supported and its movements limited in any other suitable wa 1 i The low-mold. E, or mold in which the blank is blown into form, is of known or usual construction, consisting of movably-connected sections provided with operating-handles consisting of,

e, by which the mold is opened to receive the blank, closedto surround the blank, and i opened to permit the removal ofthefini'shed article. T e form of the mold depends upon the shape of the article to be produced and differs with different articles. The mold shown in the drawings is for making the glass lamp-bod shown therein in Fig. 2 andhas a i cav ty en arged at its 11 per and, lower iportions and contracted at'its middle portion to form the base, oil-font, and waist Tplortions e mold has a base e, which is secure to'the moldi respectively, of the lamp-bod table, so as to turn therewithyby any suitable means-for instance by screws 0'. i Y F represents thoblow rod or tube, through which the air is forced into the hollow blank to blow the same to the form of the cavity of the blow-mold. The blow-rod is upri ht and of the cylinderfor moving the piston vertically in the cylinder. In theconstruction shown the upper end of the c linder is formed by the top of theframe, an air is prevented loose in the cylinder, the air in t 01 the latter can escape around the iston tofrom esca ing from the cylinder around the blow-rod y a stuffing-box g, surrounding the blow-rod. Air under pressure is admitted to the cylinder G through an air-su ply pipe h, connected with the cylinder, an the si e walls of the hollow piston are provided with perforations h, throu h which air can enter the piston and blow-r when the piston is raised, as shown in Fig. 2. The piston and blow-rod are preferably guided by ball-bearings i, i, and i, of any suitable construction arranged, respectively, between the blow-rod and the mold-table, the piston and the cylinder, and the piston-rod and the lower end of the cylinder. The piston has aloose or SWl\ e] connection of any suitable kind with its iston-rod, so that it is free to turn in the cy inder on the rod, which is held from turning. The piston and blow-rod are guided indeendently of the piston-rod by their ballbearings 11 and i and move very freely. The upper ball-bearing i prevents the blow-rod from turnin with the mold-table when the latter is osci lated; but the blow-rod and piston are free to turn with the mold and moldtable in case the neck of the article should shrink around the blow-rod sufliciently to cause it to stick in the glass article, and thus prevent the breakage or distortion of the neck of the article. The walls of the piston being perforated on all sides permit the entrance of air into the iston re ardless of the turning thereof in t e cylin er. The piston bein e upper en the lower end of the cylinder when t e piston rises, and therefore will not interfere with the upward movement of the piston. The upper end of the blow-rod being tapered, it will readilv free itself from the neck of thearticlewhen lowered out of the mold, and it will also more readily enter necks which may differ slightly in diameter by reason of their shrinking to a greater or less extent in different arti'cles.

The blow-rod and iston are raised and lowered by oscillating t e mold-table through connecting mechanism, which in the machine illustrated is constructed as follows: K represents a horizontal rock-shaft journaled in suitable bearings in the lower portion of the frame and having fixed to one end an u wardly-extending rock-arm lc. A link Figs. 1 and 3, is pivoted at one end to the upper end of the rock-arm k and is rovided at its other end with a slot 7c, in which slidably engages a stud or pin in, projectin laterally from the oscillating mold-table. ixed centrally to the rock-shaft K in any suitable manner is a lever L, which is connected at its inner end by a link I to the piston-rod for the blow-rod piston and is preferably-provided at its outer! end with-a counterbalancingweight I for, the piston and blow-rod. By this mechanism the blow-rod is raised into the blow-mold when the mold-table is oscillated in one direction and is lowered when the mold-table is oscillated in the opposite direction. The slot in the link is, connectingwith the mold-table, permits the latter to be turned part way in either direction before. the blowrod is moved, so that the blow-rod is inserted into or withdrawn from the mold justrbefore. the latter comes to rest after movement with the mold-table.

The operation of the machine as thus far described is as follows: Before the commencement of the operation' theimold will be open and the mold-tableinits ri ht-hand positionthat is, with its stop-lug 2 a ainstthestopface d on the frame. The b ank', which has been previously formed in the mold or in any known manner,is placed in the plow-mold with the mouth of the cavity located in the neck of the blow-mold, and the latter is closed. The mold and mold-tablev are then turned to the left, 1 means of the handles of the blow-mold-,unti arrested by the engage ment of the stop-1n dwith the stop-face d. This movement of t e mold-table, through the described mechanism, raises the piston f and blow-rod F' to the position shown in Fig 2, in which thetapered upper end of the blowrod enters the neck-of the blow-mold. With the piston==and blow-rod in this position air passes from the simply-pipe h throu h-the perorated piston an low-rodinto the lank, exandinglthe latter into form in the blow-mold.- hen t e article is blown, the-mold and molds table are oscillatedto the initial position,- which through the mechanism connecting the mold-table and istonlowers the blow-rod out of the mol and s uts ofi the air. The mold is then opened and the article removed.

The machine is also preferably provided with a pipe M for directin a cooling-blast into the upper hollow portion of the article while the lower hollow portion is being blown when the machine is used for blowing lamp,- bodies or other articles having oppositelydisposed hollow ortions. In the constructlOIhShOWIL the b astpipe, which is arran ed vert cally at one side of the machine and as 1 30 curedto and projecting from the frame A.

The blast-pipe is secured in the collarm, as by a set'screw n, whichallows of thevertical adjustment of the pi e to suit molds of different heights, and is eld from turning in the collar or independently thereof, as by a pin or key n slidably engaging in a longitudinal roove in the collar. The. lower end of the lastipe' M is connected, preferably by a swive -joint 0, with a pipe 1) for air under ressure. The supportin -collar for the last-pipe is connected to t e mold-table, for instance, by a link ,pivoted to rojecting arms g on the co lar and mol -table, so that the upper end of the blast-pipe is 'swun around over the center of the blow-mol when the mold-table is moved to raise the blow-rod and is swung back away from the mold when the mold-table is moved in the 0 osite direction to lower the blow-rod. vaiien the article is in the mold and being blown, the blast-pi e directs its blast into the upper cavity 0 the article against the intermediate connecting portion, keeping the same cool and preventing the air-pressure from the blow-rod from blowing a hole through the said connecting portion. When, however, the mold-table is oscillated to lower the blow-rod, the upper end of the blast-pipe is swung away from themold, so as not to cool the mold when the article is removed therefrom. The blast-pipe could be constructed, supported, and operated from the mold-table in other ways without departing from the invention.

The other described features of the machine are not necessarily limited to a machine having the coolin -blast pipe, and the cooling blast i e could eemployed in a machine in WhlO the other parts are of different construction and operation.

I claim as my invention.

1. The combination of a blow-rod which is movable vertically into and out of blowing position, a mold-table which is movable about the blow-rod, and connections between the mold-table and blowrod whereby the latter is raised and lowered by moving the mold-table, substantially as set forth.

2. The combination of an oscillatory mold-,

table, a blow-rod which is movable vertically into and out of blowin osition, and connections between the mo% -table and blow-rod whereby the latter is raised and lowered by moving the mold-table, forth.

3. The combination of a movable moldtable, a blow-rod which is arranged below the mold-table and is movable into and out of blowing position, and connections between tbemold table and blow-rod wherebythe latsubstantially as set I ter is raised and lowered by moving the maidtable, substantially as set forth.

4. The-combinatio nohan oscillatorymoldtable,a blow-rod whichis arranged centrally below the mold table and, is movable vettically into and out of blowing QSli-iOI'l', and

connections between the ,mo d-able and.

blow-rod-wliereby the latter is raised'and lowered by. movingthe mold-table, substantially as setf orthi i i 1.

r 5: The combination with a.blowrod which is movable vertically into and out of blowing position, a mold-table which is concentric with the blow-rod and is movable about the blow-rod and independently thereof, and connections between .the mold-table and blow-rod whereby the latter is raised and lowered b substantia ly as set forth.

6. The combination of a blow-rod which is movable vertically into and out of blowing position, a mold-table which is concentric with the blow-rod and is movable about the blow-rod and independently thereof, said blow-rod being also rotatable about its axis, and connections between the mold-table and blow-rod whereby the latter is raised and lowered by the movement of the former, substantially as set forth.

7. The combinationof a blow-rod which is movable vertically into and out of blowing position, a mold-table which is movable about the blow-rod means movable with the blow-rod for controlling the air-suppl thereof, and connections between the mold-table and blow-rod whereby the latter is raised and lowered by moving the mold-table, substantially as set forth.

8. The combination of'a blow-rod which is movable vertically into and out of blowing position, a mold-table which is movable about the blow-rod, an air-cylinder, a piston carrying the blow-rod and movable in said cylinder and havingfone or more holes for admitting air from said cylinder to the blowrod, and connections between the mold-table and said piston whereby the latter is raised and lowered by moving the mold-table, substantially as set forth.

9. The combination of a mold, a movable mold-table, a blast-pipe for cooling the artithe movement of the former,

cle in the mold, and connections between the mold-table and blast-pipe for -moving the latter toward and from the mold by the movement of the mold-table, substantially as set forth.

10. The combination of a mold, an oscillatory mold-table, a laterally-swingin blastpipe for cooling the article in the mo d, and connections between the mold-table and blast ipe for moving the latter toward and from t e mold by the movement of the moldtable, substantially as set forth.

11. The combination of a mold, a blowrod movable into and out of blowing posi- .tion, a blast-pipe movable toward and tion, a blastipe movable toward and from the mold, an a single o )erating mechanism for said blow-rod and blast-pipe, substantially as set forth.

12.The combination of a mold, a blowrod movable into and out of blowing posirom the mold, a movable mold-table, and connections between said mold-table and the blow-rod and blast-pipe for operating suid blow-rod and blast-pipe from said moldtable, substantially as set forth.

13. The combination of a mold, an oscillatory mold-table, a blast-pipe for cooling the article in the mold, a rotatable support to which said blast-pipe is edjustably secured, and means connecting said moldtahle and blast-pipe support whereby the blast-pipe is operated by the movement of the mold-table, substantially as set forth.

Witness my hand this 7th day of August,

GEORG EUGENE SCHMITT. Witnesses:

HARRY F. BAUMER, Tnos. H; WEIRICH. 

